Fix memory leak

main.js

@@ -28,11 +28,15 @@ bot.on('error', (e) => {
   if (bot !== undefined) bot.end(e.message);
 });
 
-bot.on('end', (reason) => { // Out of memory.
+bot.on('end', (reason) => { // Memory leak.
+	Object.keys(bot._events).forEach((event) => { bot.removeAllListeners(event) })
     console.log(`Bot disconnect: ${reason}\nReconnect in 6 seconds...`);
 	setTimeout(() => {
 		createBot();
 	}, 6e3);
+	setTimeout(() => { 
+		bot = null;
+	}, 20000); // 20seconds is enough
     return;
 });
 
@@ -46,6 +50,7 @@ bot.on('custom_profilelessChat', (message, profilelessChat, packet) => {
 
 bot.on('custom_systemChat', (message, systemChat, packet) => {
 	console.log(`[SystemChat] ${message}`);
+	console.log(JSON.stringify(systemChat.jsonMsg.message))
 });
 
 bot.on('login', () => {